A Study of the Electronic Structure of CuNi Alloys Using LMTO, LSDA and Recursion Method

Thesis Adviser

:

Prof. Mesbah Uddin Ahammad

Result

:

1st Class 2nd Position

B.Sc. in Physics

:

Department of Physics, University of Dhaka, Dhaka, Bangladesh

Graduation date

:

June 2002

Result

:

1st Class 2nd position

H. S. C (science group)

:

Govt. Ashek Mahmud Collage, Jamalpur. Dhaka Board, Bangladesh

Year of passing

:

1996

Result:

:

1st division

S. S. C (science group)

:

Ahammad Nagar High School, Sherpur. Dhaka Board, Bangladesh

Year of Passing

:

1994

Result

:

1st division

ACADEMIC POSITIONS:

Associate Professor (May 2016 to present): Department of Physics, University of Dhaka, Bangladesh

Assistant Professor (May 2015 to May 2016): Department of Physics, University of Dhaka, Bangladesh

Lecturer (October 2006 to May 2015): Department of Physics, University of Dhaka, Bangladesh (Study leave, from August 2008 to April 2015)

Graduate Teaching Assistant (August 2008 to August 2009): University of Central Florida, USA

Lecturer (October 2004 to October 2006): Department of Arts and Science, Ahsanullah University of Science and Technology, Dhaka Bangladesh.

PROFESSIONAL TRAINING:

Training name: Preparing for Future Faculty, Fall 2011

Training duration: 3 months

Training type: Instruction and demonstration

Training porous: Learn how to teach eﬀectively in a class

Diploma awarded: yes

Place of training: Faculty Center, University of Central Florida, USA

RESEARCH INTEREST:

I use computer simulation of nano-materials to find the new materials for technological and biomedical applications. In my research, I apply Density Functional Theory (DFT) and Dynamical Mean-Field Theory (DMFT) approaches to study the electronic and magnetic properties of transition metal nanosystems of different sizes and compositions. In particular, in order to take into account dynamical electron correlation effects (time-resolved local charge interactions), we have adopted the DFT+DMFT formalism and made it suitable for application to nanostructures. We have developed our own nano-DFT+DMFT code and applied it to examine the magnetization of iron nano-particles containing 10-147 atoms. We have also developed DFT+DMFT code which is suitable to study systems with mixed geometry which are periodic (infinitely extended), in two directions, and finite in the third. Up on application of this code on Fe2O3 film we found remarkable improvement of results as compared to data available in DFT and DFT+U approach. In parallel, we have carried out a systematic study of magnetic anisotropy in bimetallic L10 FePt nanoparticles (20-484 atoms) by using two DFT-based approaches: direct and the torque method. We find that the magneto crystalline anisotropy (MCA) of FePt clusters is larger than that of the pure Fe and Pt ones. We find that particles whose (large) central layer consists of Pt atoms, rather than Fe, have larger MCA due to stronger hybridization effects. Such ‘protected’ MCA, which does not require protective cladding, can be used in modern magnetic technologies such as magnetic hard disk for computer uses and in cancer treatment by hyperthermia technique. All these work require lots of code development and computational uses. We are using super computers for this purpose.

Currently I am supervising six research students. The students are working on their M.S. thesis.

I am also working in collaboration with Professor Talat Rahman, at University of Central Florida, USA.

S. I. Shah, A. Kabir, P. Jelenek and T. S. Rahman, “Electronic structure and simulation of STM images of single layer MoS2 with and without vacancy: The role of diﬀerent types of tip in the image formation” (Submitted)